Apparatus for elevating, transporting, and discharging material.



No; 636,9'02. I Patented Nov. l4. I899. 0. JOHNSON.

APPARATUS FOR ELEVATING, TRANSPOBTING, AND DISGHABGING MATERIAL.

(Application filed Dec..27, 1898.) (No Model.) 6 Sheets-Sheet l.

w: NORRIS PETERS (0.. PHOTD-LIYHDH mmsmumoumv c.

No. 636,902. Patenteil Nov. 14, I899. 0. JOHNSON.

APPARATUS FOR ELEVATING, TBANSPOBTING, AND MSGHARGING MATERIAL.

(Ap licati n filed Dec. 27, 1898. (No Monal.) p o j 6 Sheets-Sheet 2.

I I Z] 20 Em? MW "m: noRRls PETERS co wmaumo" WAGNXNGTON. n. c

No. 636,902. Patented Nov. I4, I899.

0. JOHNSON.

APPARATUS FOR ELEVATING, TRANSPORTING, AND DISCHARGING MATERIAL.

I (Application filed Dec. 27, 1898.)

(N0 Model.)

6 Sheets--Sheet 3.

No. 636,902. Patented Nov. [4, I899.

' 0. JOHNSON.

APPARATUS FOR ELEVATING, TRANSPDRTl-NG, AND DISOHARGING MATERIAL.

(Application filed Dec. 27, 1898.] (No Model.)

6 Sheets-Sheet 4.

fim/ m u 31%.10

N0.- 636,902. Patented Nov. [4, I899. 0. JOHNSON.

APPARATUS FOR ELEVATING, TRANSPORTING, AND DISCHABGING MATERIAL(Application filed Dec. 27. 1898.) (No Model.) 6 Sheets-Sheet 5.

. No. 636,902. Patented ram/(l4, I899.

0.. .mnuson.

APPARATUS FOR ELEVATING, TBANSPORTING, AND DISCHARGING MATERIAL.

(Application filed Dec. 27, 189B. (No Model.)

6 Sheets- Sheet 6.

'm': NORRIS PETER: ca. wow-Lima, wnsumzzron. a, c

{AT-ENT FFIQE.

OLE JOHNSON, OF MILWAUKEE, WISCONSIN.

APPARATUS FOR ELEVATING, TRANSPORTING, AND DISCHARGING MATERIAL;

SPECIFICATION formin part of Letters Patent 1 \To.6 36,902, datedNovember 14, 1899; Application filed December 27,1893. Serial No.700,333- (No model.)

To all 2.072011% it may concern:

Be it known that I, OLE JOHNSON, of Milwauke, in the county of Milwaukeeand State of Wisconsin, have invented a new and useful Improvement inApparatus for Elevating, Transporting, and Discharging Material, ofwhich the following is a description, reference being had to theaccompanying drawings, which are a part of this specification.

My invention has relation to improvements in apparatuses for elevating,transporting, and discharging material.

The primary object of my invention is to provide a construction whereina counterweight is used in connection with a system of cables for thepurpose hereinafter pointed out.

A further object is to provide, in combination with a simple form ofgearing for automatically operating the buckets used in this class ofdevices, the improved arrangement of counterweight and cableshereinafter set forth.

A further object is to provide, in connection with the counterweight andcables above referred to, for automatically operating the buckets usedin this class of apparatus by friction-gearing instead of by toothedgearing,

thereby making it possible to provide a much more simple arrangement andcombination of parts;

A further object is to provide, in combination with the counterweightand cables referred to, a simple form of gearing for automaticallyoperating the so-called clam-shell buckets used in this class ofdevices.

A further object is to provide for an improved form of carriage, stopmechanism therefor, and an improved means for automatically unlockingthe bucket from the carriage, as will be hereinafter more fully pointedout.

With the above principal and other incidental objects in view theinvention consists of the devices and parts or their equivalents, ashereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a side elevation of thecomplete apparatus, parts broken away. Fig. 2 is a plan view of theupper portion of Fig. 1, with parts removed and showing the location ofthe pulleys. Fig. 3 is a side elevation of the driving mechanism. Fig. 4is a plan view of Fig. 3. Fig. 5 is a detail view of the reversing-wheeland the arm carrying the same. Fig. 6 is a side elevation of thecarriage, part of the track, and part of the stop,-said stop being insection. Fig. 7 is aplan View of the holding and releasing arm for thecarriage. Fig. 8 is a section on the'line 8 8 of Fig. 6. Fig. 9 is adetail of the pulley attached to the clam-shell. Fig. 10 is a plan Viewof the stop and part of the holding mechanism for the carriage. Fig. 11is an end View of Fig. 10, showing the rails in cross-section. Fig. 12is a detail view of the clam-shell bucket. Fig. 12 is a side elevation,showing my invention applied to a cantaliver-bridge derrick. Fig. 13 isan end view of the tower at the righthand end of Fig. 12, and Fig. 14is'a side elevation showing my invention applied to a different form ofboom-frame and boom.

In Fig. 1 of the drawingsl show a permanent or fixed main frame orstructure con sisting of upright posts 15, connecting cross beams 16 atthe upper ends of said posts, and a top or cover 17 The forward uprightposts are also connected by means of another crossbeam 18, arrangedbelow the forward crossbeam 16 and formed on its upper side with a rail19, which rail is curved in the arc of a circle.

In Figs. 1 and 2 of the drawings I show a boom-frame consisting ofparallel side members 20 20, arranged at a gradual declination towardthe front of the main frame, and upper bars 21 21. These upper and lowerbars are connected by means of diagonal connecting-rods 22. The'lowerbars are preferably of the form of channel-irons. On the under sides ofthe bars 21, near the forward ends of said bars, are carried rollers 2323, which ride on the curved rail 19. These upper bars 21 are connectednear their rear ends by means of a cross-piece 24, through which apivot-pin 25 passes and extends through the rear connecting cross-beam16. This pivot permits of a swinging of the boom-frame, so that theforward end of said frame is capable of swinging to a limited extent inthe arc of a circle, the rollers 23 at the'forward end of said boomframeriding on the curved rail 19.

Pivoted at the forward ends of the lower pieces 20 of the boom-frame isa projecting boom, the pivot 26 thereof being such that the boom iscapable of an up-and-down swinging movement. This boom is composed oftwo side pieces 27 27, preferably in the form of channel-irons andforming continuations of the i i p side pieces 20 and together therewithforming a track for the travel of the carriage thereon. This carriageconsists of two side pieces, (indicated by the numerals 28 28,) andmounted in these side pieces are axles 29 29, on which are mountedwheels 30 30, said wheels adapted to run on the rails of the boomframeand boom. The lower edge of each of these side pieces of the carriage ispreferably cut away in the form of an inverted V, as clearly shown inFig. 6, and from the apices of these V-shaped edges slots 31 extendupwardly. Pivoted to the side pieces of the carriage are levers 32 32.The lower ends of the long arms of these levers are formed with hooks,as clearly shown, and the upper short arms of said levers have connectedthereto coiled springs 33, the opposite ends of said springs beingconnected to the side pieces of the carriage.

The numeral 34: indicates the locking-arm, which is in the form ofayoke, as most clearly shown in Fig. 7, so as to provide two sidemembers, which are adjacent to the side pieces of the carriage' Theforward ends of these side pieces are united to form a hook The rearends of the side members of this locking-arm are formed with elongatedslots 36, through which a transverse pin 37 passes, said pin also, ofcourse, extending through openings therefor in the side pieces of thecarriage. At opposite medial points the side members of the locking-armare formed on their inner sides with recesses 38 38, said recessesterminating at their forward ends in abrupt shoulders 39 39. The forwardportions of the side members of the lockingarm are held to the sidepieces of the carriage by means of keepers 40.

The numeral 41 indicates a block which is secured near the forward endof the boom. To the under side of this block is secured, by means ofbolts or equivalents, a casting or bracket -12, said casting or bracketformed with a chamber 43.

The numeral it indicates a bumper-head which extends into the chamber 43and is provided with a projecting stem 45, the forward end of said stemextending freely through an opening in the forward end of the casting orbracket 42. \Vithin the chamber 43 is arranged a coiled spring i6, whichsurrounds the stem 45. Projecting rearwardly from the block at are sidepieces 47 47, the rear edges of said side pieces being curved in the arcof a circle, as clearly shown. These side pieces are connected at theirlower edges by means of a transverse rod 48, which red at its center isbent downwardly, as most clearly shown in Fig. 11, so as to be readilyengaged by the hook at the forward end of the locking-arm.

Between the side pieces of the carriage and mounted on the same axes asthe wheels 30 are pulleys 1-9 and 50, respectively.

The driving mechanism is shown in detail in Figs. 3 and 4: of thedrawings. Referring to this mechanism, the numeral 51 indicates a shaftwhich is mounted in the side pieces of a rectangular frame 52. One endof this shaft projects beyond one of the side pieces of said frame 52and carries thereon a belt pulley or gearing, (not shown,) whereby saidshaft may receive rotation from any source of power. This shaft hasmounted thereon a friction-pulley 53. The shaft 51 occupies anintermediate position between two other shafts 5i and 55, respectively,which are also mounted in the rectangular frame. These shafts have drums5G and 57 mounted, respectively, thereon, and also friction-pulleys 58and 59 mounted, respectively, thereon, said pulleys being larger thanand in line with the friction-pulley 53. One end of each of the shafts5i and 55 have mounted thereon eccentrics. The eccentric for shaft 5% isindicated by the numeral 60 and the eccentric for the shaft 55 by thenumeral 6]. Eccentric 60 is surrounded by an eccentric-ring 62, and tothis ring is connected an arm 63, said arm in turn having secured to itsouter end a link 6i. To the upper end of this link is joined amedially-pivoted lever 05. The eccentric 61 is also surrounded by aneccentric-ring (J6, and this ring has projecting therefrom an arm 67,said arm having pivotally connected thereto a link 68, the upper end ofsaid link being jointed to a medially-pivotedlever 69.

The numeral indicates an arm which is formed or provided at its lowerend with a yoke portion 71. Journaled in the ends of this yoke is ashaft or axis for a small friction-wheel 72, preferably a paperfriction. This small friction-wheel 72 is located beneathfriction-pulley 53 and adjacent to large friction-pulley 58. The lowerend of the yoke is engaged by the ends of coiled springs 73, theopposite ends of said coiled springs being secured to links 75 the otherends of said links being secured to the framework To the upper end ofthe arm 70 is joined a mediallypivoted lever 75.

The numeral 76 indicates a brake which has its face curved, as clearlyshown in Fig 3 so as to receive contact of the friction-pulley 09.

The numeral 77 indicates the so called clam-shell bucket. Its bottomconsists of two pivoted sections 78 78, said bottom-sections havingextending upwardly from the upper edges thereof ears or lugs 79. Inthese cars or lugs are mounted the ends of a shaft 80, said shaft havingfast thereon a grooved roller 81. Links 82 are connected to the outerends of the upper edges of the pivoted bottompieces of the bucket andextend upwardly and inwardly to a common connecting-point 83, whichpoint is provided with an upwardlyextending portion 8t, said portioncarrying a roller 85. The hoisting-rope is indicated by the numeral 86.This rope is secured to the carriage at the point 87, is then extendeddownwardly and around roller 85, thence upwardlyand around pulley 50 ofthe carriage, and is thence extended rearwardly beneath apulley 88 andover a pulley 89 at the rear end of the boom-frame, thence downwardlyand around a pulley 90 at the rear end of a longitudinal beam 91, thenceextended forwardly over a pulley 92, thence around a quartered pulley93, and thence finally around another quartered pulley 94, from whichpulley it is extended to the drum 57, to which it is secured.

The rope or cable for opening and closing the jaws of the bucket isindicated by the numeral 95. This rope is connected to the groovedroller orpulley 81 of the clam-shell bucket. It is then extendedupwardly in engagement with a guide-pulley 96, thence around thepulley49 of the carriage, thence forwardly and around a pulley 97 at theforward end of the boom, thence upwardly and rearwardly over a pulley 98and under a pulley 99, thence to pulley 100, from the latter pulley topulley 101, thence around pulley 102, and thence downwardly to drum 56.The rope or cable is wound a plurality of times around this drum andpreferably secured thereto, and is then extended upwardly to a pulley103, and is then extended downwardly to another pulley 104, which iscarried by a counterweight 105. The rope or cable is extended back andforth from these two pulleys 103 and 101 for the purpose of m ultiplyingthe motion, and is finally connected to an arm 106, extending upwardlyfrom the counterweight. A short cable 107 is connected to the shaft 80of the bucket and is then extended upwardly for connection at the point83.

The boom is raised or lowered on its pivot by means of a rope or cable108, which may be operated in any desirable manner, or said boom may beraised by cable 95. It will be understood that the line 108 is extendedand connected to a winch. (Not shown.) When, therefore, the winch isturned in one direction, the rope or cable 108 is wound thereon,wherebythe boom is necessarily raised, and when the winch is turned -in theopposite direction the rope or cable 108 is unwound and of course theboom is lowered. Cable 95 will of course raise or lower the boom whenthe drum 56, to which said cable is connected, is rotated in the properdirection for effecting the raising or lowering, as the case may be, andthe other drum 57 held fast. Cable 95 can also be operated so as toswing the whole boom-frame horizontally in one direction in order todetermine the position of the bucket with relation tothe hatchway of thevessel. The boom-frame may be swung in an opposite direction by anydesirable meanssuch,for instance,as a pendent rope. Attention is furtherdirected to the fact that the boom-frame may be raised or lowered by thecable 86 when the drum 56 is held fast and the drum 57 rotated in aproper direction, in accordance with whether it is desired to raise orlower the boom.

The operation of myinvention is as follows: In the position of thebucket shown in Fig. 1 it will be supposed that said bucket is descending into the hold of the vessel. When it is thus descending,neither the friction 58 nor the friction 59 is in direct engagement withthe small friction 53. As the bucket thus descends, the cable 86 unwindsfrom the drum 57, the speed of rotation of said drum being regulated bythe engagement of the friction 59 with the brake 76, and that portion ofcable 95 leading to the bucket is unwound from drum 56 by the descent ofthe bucket, while that portion of cable 95 leading to the counterweightis wound up on drum 56, and consequently said counterweight is raised.When the bucket is lowered sufficiently, the next operation is to causethe pivoted bottom jaws of the bucket to be opened.

This is accomplished by thrusting the fric'-. 7

leading tothe counterweight is wound up on the drum 56, as before, so asto pull on said portion of the cable, and thereby still further elevatethe counterweight, while the portion of the cable 95 leading to thebucket is slackened. .This slackening permits the pivotedbottom-sections of the bucket to be swung on their pivots and opened,the slack of the cable being taken up by the winding of said cable onthe grooved roller 81 and the short cable 107 unwound from the shaft ofsaid roller 81. It is of course obvious that the pivoted bottom-sectionsmaybe slowly opened during the descent of the bucket and before saidbucket has reached the limit of its down movement, and this isaccomplished merely by braking friction 59 to such an extent as to causethe cable 86 to unwind from drum 57 slower than cable 95 unwinds fromdrum 56. After the pivoted bottom-sections are opened in the mannerdescribed the next step is to close the pivoted bottom-sections of thebucket, and thereby fill said bucket. This is accomplished bymanipulating the lever 75 so as to allow the springs 73 to returnreversing-friction 72 back to its former position out of engagement withfriction 58, if by the previous operation it had been put in engagementwith friction 58. The lever 65 is now manipulated so as to cause theeccentric 60 to thrust the friction 58 into engagement with friction 53.Drum 56 will now be rotated in a reverse direction to that firstexplained-that is to say, it will rotate in a direction to cause aslackening of that portion of cable 95 whichleads to the counterweight105, so as to permit said portion of cable 95 to unwind from the drum,and thereby allow the descent of the counterweight, while that portionof cable 95 which leads to the bucket will be wound up on the drum 56,and consequentiy a tightening of that portion of the cable will result,thereby unwinding said portion of the cable from the grooved roller 81and winding up the short cable 107 on the shaft of the grooved .roller81, thereby causing a closing of the pivoted bottomsections of thebucket. After the closing is thus effected the next step is to hoist thebucket to the carriage and then cause the travel of the carriage alongthe track. To accomplish this, lever 65 is manipulated so as to throwfriction 58 out of engagement with friction 53, and manipulate lever 69so as to operate on eccentric 61 and cause the friction 59 to be thrustinto engagement with friction 53. This will cause a rotation of drum 57in a direction to wind up on cable 86, and consequently elevate thebucket. Of course with this up movement of the bucket a slack wouldordinarily be produced in the cable 95; but this slack, during theentire up movement of the bucket, is taken up by reason of the descentof the counterweight 105. After the bucket has been elevated a certaindistance the trunnions 109 109 of the pulley 85 will pass into the slots31 and will act against the lower hooked ends of the levers 32 and turnsaid levers so as to permit the trunnions to pass above the hooks, andthe moment said trunnions leave the hooks the levers 32 will be returnedto their normal position by the springs 33, and the hooks therebyengaging under the trunnions, asshown in Fig. 6, whereby the locking ofthe bucket to the carriage is elfected. The continued rotation of thedrum 57 in the direction described will now cause the carriage, with theattached bucket, to travel along the track, and when the point isreached where it is desired to discharge the material the carriage isstopped by stopping the rotation of the drum 57, and the pivotedbottom-sections of the bucket opened in the manner already fullydescribed and the material thereby discharged. In Fig. 1 of the drawingsI have shown a hopper 110, in which the discharged material is adaptedto pass, and beneath this hopper is a car 111, adapted to receive thematerial from the hopper. It is obvious, however, that the carriage maybe stopped and the material discharged at any point along the track. Itwill be understood that the hook of the locking-arm 34 is released fromengagement with the locking-rod 48, so as to permit of the travel of thecarriage up the inclined track by reason of the contact of the trunnions109 with the side members of the arm 34 on the up movement of saidtrunnions in the slots 31 in the act of locking the bucket to thecarriage. The moment the hook of arm 34 is raised out of engagement withthis rod 48 the carriage is then free to travel, and when the hookentirely clears the rod 48 the arm 34 drops to its normal position.After the material is discharged and it is desired to return thecarriage and bucket to the end of the boom, or to the position shown inFig. 1, the lever 69 is again manipulated so as to throw friction 59 outof engagement with friction 53. This will cause the counterweight 105 todescend by the unit eeaeo winding of that portion of the cable 95leading from the counterweight to the drum 56 and the winding up on thedrum 56 of that portion of cable 95 leading to the bucket. 'lhecarriage, therefore, is free to travel down the inclined track bygravityand by the pull of weight 105, the cable 86 at the same time unwindingfrom the drum 57, the speed of rotation of said drum being regulated bythe engagement of the friction 59 with brake 76. lVhen the carriagereaches the end of its travel down the inclined track, the hook 35 ofthe locking-arm 34 will engage over the rod 48, and will also contactwith the bumper 44, said bumper preventing jar and concussion. Thisengagement of the hook of the lockingarm 34 will occur, however, beforethe carriage has quite completed its full movement. At this time it isimpossible for the levers 32 to turn on their pivots, as said levers arebearing against the abrupt shoulders 39 of the recesses 38. (See Fig.7.) The forward movement of the carriage, however, to the extentpermitted by the slots 36 will cause a pull on the upper arms of thelevers 32 and a consequent turning of said levers on their pivots, so asto release the hooks of the levers from engagement with the trunnions109 of pulley 85, whereby the bucket is unlocked and is permitted todescend, the levers 32 returning to their normal positions the momentthe carriage has fully completed its movement by the action of thecoiled springs 33. When the carriage completes its full movement, thepulley 49 contacts with the curved edges of the side pieces 47, whichside pieces, therefore, act as stops for the carriage.

From the description of the operation of my invention it will be seenthat the counterweight is adapted on the raising or lowering of thebucket to the carriage or on the travel of the carriage along the trackto hold the pivoted jaws of the bucket locked,irrespective as to whetheror not the drums are operatively connected to the motive power. It willalso be observed that the counterweight is adapted, on the raisingthereof, to slacken that part of its cable which leads to the bucket inorder to permit the pivoted bottom sections of the bucket to open.

It will be understood that the position of the boom-frame and boom withrespect to the material to be raised is regulated by swinging saidboom-frame and boom on the rail 19. The distance of the boom from thematerial to be raised is regulated by the cable 108 or by the cable 95or 86, as hereinbefore fully described.

It is obvious that the particular arrangement of pulleys herein shownand described is not absolutely essential, as any other desirablearrangement whereby the cables may be extended to and from the drums tothe carriage and to the bucket and from one of the drums to thecounterweight may be adopted without departing from the spirit and scopeof my invention. It is also obvious that it is not absolutely essentialthat the cable 95' should pass over a pulley, such as 97, at the extremeend of the boom, as said cable may becarried down to the bucket from thepulley the numeral 112 indicates a forward tower,

and 113 a rear tower, said towers adapted to travel on suitable rails.Between these towers is suspended a cantaliver-bridge 114,and to theforward end of this bridge is pivoted a boom 115. The same form ofcarriage is employed and also the same cables as in the preceding formof my invention. These cables, however, are operated in a differentmanner than in the preceding form, as will now be explained. Thehoisting and pulling cable extends downwardly from a fixed point of thecarriage to and around pulley 85, as before. It is then extendedrearwardly to the end of the cantaliver-bridge and around two pnl leys116 and 117, thence forwardly and over a pulley 118, thence downwardlyand beneath another pulley 119, and finally to the drum 120, said drumbeing adapted to be operated by any suitable engine mechanism 121. Thecable 95 starts from 'the grooved roller 81, is then extended upwardlyover pulley 49,thence forwardly over a pulley 122, thence upwardly andrearwardly over a pulley 123, thence downwardly and wound a plurality oftimes around a drum 124:, and fastened thereto, thence from said drum toa pulley 125, and from said pulley downwardly to a counterweight 126. Itis extended back and forth from pulleys carried by the counterweight topulleys located below pulley 125. The drum 124 is also operated byseparate engine mechanism 127. The operation of this form of myinvention is similar to the first-described form, excepting that the twodrums for the two cables are operated by separate engine mechanisms.

In Fig. 14 is shown an application of my invention to still another formof boom-frame. The frame in this figure of the drawings is indicated bythe numeral 128 and the boom by the numeral 129. The carriage, buckets,drums, cables, and operating means for the drums and cables are the sameas in the Fig. 1 form of construction. A different arrangement ofpulleys over which the cables pass, however, is necessarily required inorder to suit the changed form of frame, and the position of the cablesthemselves are also somewhat changed. In other words, the cable 95occupies the right-hand position with respect to the bucket instead ofthe left-hand position, as shown in Fig. 1,and the cable 86 is on theleft of the bucket instead of on the right, as in Fig.

1. In this form of boom-frame ahopper 130 is provided, into which thebucket is adapted to discharge, said hopper in turn adapted to dischargeinto a car 131, located beneath the same. In this form of the inventionthe incline of the boom is so great that no locking mechanism for thecarriage is requird, the stopping being accomplished merely by stoppingthe engine mechanism or shifting the stopping-block.

What I claim as my invention is 1. In an apparatus for elevating,transporting and delivering material, the combination, of a track, acarriage adapted to travel on said track, a bucket having opening andclosing means, drums, mechanism for rotating the drums in the samedirection, or in opposite directions, and at the same speed, or atvariable speeds, a counterweight, ahoisting-cable connected to thecarriage, and extending downwardly to and around a pulley, orequivalent, connected to the bucket, thence extended upwardly over apulley carried by the carriage, and thence extended to and connectedwith one of the drums, another cable connected to the opening andclosing mechanism of the bucket, thence extended upwardly overa pulleycarried by the carriage, thence extended to the other drum and aroundsaid drum, and finally extended to and connected with the counterweight,and adapted for raising and lowering said counterweight in accordancewith the direction of rotation of said drum, said counterweight therebycontrolling said cable and causing said cable to hold the bucket closedwhen the speeds of rotation of the drums are the same, and when thecounterweight-drum is rotated in a direction to raise the counterweight,and when the speed of rotation of the counterweight-drum ex ceeds thespeed of the hoisting-cable drum causing said cable to act on theopening and closing mechanism of the bucket in order to open the bucket,and when the counterweightdrum is rotatingin an opposite direction, saidcounterweight adapted to descend and unwind the portion of its cableleading therefrom to the drum, and wind up on the drum the portion ofthe cableleading to the opening and closing mechanism of the bucket,whereby said bucket is closed.

2. In an apparatus for elevating, transport ing and delivering material,the combination, of a track, a carriage adapted to travel on said track,a bucket having pivoted bottom sections, a grooved roller mounted on ashaft journaled in the bucket, a short cable con nected to said shaftand to a fixed point of the bucket, drums, mechanism for rotating thedrums in the same direction, or in opposite directions, and at the samespeed, or at variable speeds, a counterweight, a hoistingcable connectedto the carriage and extending downwardly to and around apulley,orequiva-- lent, connected to the bucket, thence extended upwardly over apulley carried by the carriage, and thence extended to and connectedwith tended to the other drum and around said drum, and finally extendedto and connected with the counterweight and adapted for raising andlowering said counterweight in accordance with the direction of rotationof said drum, said counterweight thereby controlling the said cable andcausing said cable to hold the pivoted bottom sections of the bucketclosed when the speeds of rotation of the drums are the same, and whenthe counterweight-drum is rotated in a direction to raise thecounterweight, and to cause said cable to open the pivoted bottomsections of the bucket, when the counterweight is ascending, and whenthe speed of rotation of the counteiwveight-drum exceeds the speed ofrotation of the hoisting-cable drum, and said counterweight when itsdrum is rotating in an opposite direction adapted to descend and unwindthe portion of its cable leading therefrom to the drum, and wind up onthe drum, the portion of its cable leading to the grooved roller of thebucket, whereby the pivoted bottom sections of the bucket are closed.

In an apparatus forelevating, transporting, and delivering material, thecombination, of a track, a carriage adapted to travel on said track, abucket having opening and closing means, a driving-shaft having adriving-gear mounted thereon, driven shafts, each having a drum mountedthereon and a gear mounted thereon, means for throwing either of saidgears into engagement with the drivinggear, a reversing-gear adapted tobe in engagement with the driving-gear, means for throwing saidreversing-gear also into engagement with one of the other gears,a co unterweight, a hoisting-cable connected to the carriage and extendeddownwardly to and around a pulley, or equivalent, connected to thebucket, thence extended upwardly over a pulley carried by the carriage,and thence extended for connection to one of the drums, another cableconnected to the opening and closing mechanism of the bucket, thenceextended upwardly over a pulley carried by the carriage, thence extendedto the other drum and around said drum, and finally extended to andconnected with the counterweight, and adapted for raising and loweringsaid counterweight in accordance with the direction of l rotation ofsaid drum, said counterweight thereby controlling said cable and causingsaid cable to hold the bucket closed when the speeds of rotation of thedrums are the same, and when the connterweight-drum is rotated in adirection to raise the counterweight, and to cause said cable to act onthe opening and closing mechanism of the bucket in order to open thebucket when the counterweight is ascending, and when the speed ofrotation of the counterweight-drum exceeds the speed of rotation of thehoisting-cable drum,said cou nterweight when its drum is rotated in anopposite direction adapted to descend and unwind the portion of thecable leading therefrom to the drum, and wind up the portion of thecable leading to'the opening and closing mechanism of the bucket,whereby said bucket is closed.

4. The combination, of a track, a stop arranged in the line of thetrack, said step having a curved edge, a spring-actuated bumper alsoarranged in the line of said track, and a carriage adapted to travel onthe track, said carriage carrying a pulley, the carriage adapted tocontact with the bumper, and the pulley carried by the carriage tocontact with the curved stop, after the carriage has travcled a certaindistance.

5. In an apparatus for elevating, transporting, anddeliveringmaterial,the combination, of a track, a carriage adapted totravel thereon, an arm having two side members, said side membersprovided medially, upon their inner sides, with recesses terminating inabrupt shoulders, and said side members, at one end, provided withelongated slots, a pin extending through said slots and through thecarriage, spring-actuated levers pivoted to the carriage, said leversfitting the recesses in the side members of the arm, a contact which thearm is adapted to strike, after the carriage has traveled a certaindistance, a bucket having trunnions projecting therefrom, and means forraising and lowering the bucket, the raising of said bucket causing thetrunnions to act against the hooked ends of the levers and to ride clearof the same, and to be engaged by said hooked ends of the levers, afterhaving thus cleared the same.

6. In an apparatus for elevating, transporting, and deliveringmateriahthe combination of a track, a catch arranged in the line of saidtrack, a carriage adapted to travel on the track, an arm provided at oneend witha projecting hook or latch, said arm having two side membersprovided medially upon their inner sides with recesses terminating inabrupt shoulders, said side members at one end provided with elongatedslots, a pin extending through said slots and through the carriage,spring-actuated levers pivoted to the carriage, said levers fitting therecesses in the side members of the arm, a contact with which the arm isadapted to strike, after the carriage has traveled a certain distance, abucket having trunnions projecting therefrom, and means for raising andlowering the bucket, the raising of said bucket causing the trunnions toact against the hooked ends'of the levers and to ride clear of the same,and to be engaged by said hooked ends of the levers, after having thuscleared the same.

In testimony whereof I ailix my signature in presence of two witnesses.

OLE JOHNSON. Witnesses:

A. L. MORSELL, C. H. KEENEY.

